Syntax error with some attribute names

Let us have a table tab. It contains only columns a and b.

Input > tab.traject
Invalid key: None:1:51 --> tab.traject <--
column traject not found in Table tab

This is correct. But this should not occur:

Input > tab.trajecto
Syntax error: None:1:48 --> true));tab*.trajecto <--
Expected '(' or 'to' or ',|\)|=' or ':='